Cold spray zinc with high zinc content, durable life of 20 years, anti-corrosion paint for hardware parts

Description :

　　Cold spray zinc is a single component high zinc content zinc rich coating. It is a galvanized coating composed of zinc powder with a purity of over 99.9%, volatile solvents, and organic resins. Compared with other two-component zinc rich coatings or other single component products, the zinc content in cold spray zinc coatings is extremely high (with over 96% zinc in the dry film).

　　Product features

　　1. Rust prevention effect - with dual functions of cathodic protection and barrier protection

　　A、 Cathodic protection function

　　Cold spray zinc is different from general coatings, as its dry film contains over 96% pure zinc, which can provide excellent cathodic protection for steel. Even in harsh environments, it can still protect the surface of steel for a long time. The anti-corrosion performance can be comparable to or even better than hot-dip galvanizing.

　　B、 Barrier protection function

　　When cold spray zinc coating is oxidized, a layer of zinc salt is formed on the surface of the coating to provide barrier protection. At the same time, the adhesive in the cold spray zinc coating also provides an additional barrier protection, thereby slowing down the oxidation of zinc. So the anti-corrosion performance of cold spray zinc coating is better than that of spray zinc (aluminum), hot-dip galvanizing, and other zinc rich coatings.

　　2. Easy to operate and use - Single component zinc rich coating

　　This product is a single component zinc rich coating. Compared with two-component and three component coatings, there is no cumbersome mixing process and time limit for coating use before use. Easy to operate, no special skills required, just stir evenly to ensure the necessary coating thickness.

　　3. Excellent primer and good compatibility

　　When using cold spray zinc coating as the primer in the anti-corrosion coating system, it has good compatibility with various coatings (except for alcohol acid oil-based coatings).

　　4. Fading - The color of the paint film gradually changes after being exposed to sunlight

　　Cold spray zinc can be used as a standalone anti-corrosion system, and as the zinc powder oxidizes in the atmosphere, the color of the coating will gradually change. Cold spray zinc has the same degree of color fading ability as galvanized sheet.

　　5. Conductivity

　　Cold spray zinc has electrostatic conductivity, but it does not have the same conductivity as conductive paint.

　　Scope of Application

　　This product can be widely used for rust prevention of iron structures and maintenance of galvanized components

　　1. Various large steel structures and metal components

　　Usage case study

　　Civil engineering bridges, elevated bridges, guardrails, fences, signage columns, steel bars

　　Construction related pipelines for gas, waterway, structures, etc., steel frame structures, temporary football fields, handrails, safety fences, stairs, scaffolding, construction iron window frames, three-dimensional parking lots for electricity, communication related iron towers, iron columns, scaffolding for power machines, metal parts, various antennas, transformer racks, wire laying iron structures for ships, fisheries related refrigeration equipment, anchors, locks, fishing lights, buoys, oil storage tanks, various assembled metal appliances, piping metal appliances, environmental hygiene related environmental hygiene equipment, incinerators, various buckets, agricultural horticulture related greenhouses, silos, chicken houses, agricultural installation structures, irrigation water pipes, agricultural machinery

　　2. Repair of old hot-dip galvanized steel structures and galvanized parts

　　3. Repair of cutting surfaces, welding points, and areas of zinc coating detachment on galvanized steel, etc.

　　Main technical indicators

　　Reference for project technical indicators

　　When exposed to sunlight outdoors, the color of the coating changes just like the color of the galvanized parts.

　　Specific gravity 2.50 ± 0.05 determination method JIS K 5400 4.6.2

　　Surface drying (min) 30-60 at room temperature

　　Pencil scratch hardness test B determination method JIS K 5400 8.4.1

　　Method for determining the force test of no more than level 1 using the grid method JIS K 5400 8.5.2 1mm * 100 mesh

　　Heat resistance<100

　　Salt water resistance test with white rust and no other abnormalities immersed in 3% NaCl solution for 3 months.

　　Salt spray resistant white rust, no other abnormalities for 2500 consecutive hours (high value for 4032 consecutive hours)

　　Coating amount (㎡/kg) 4.0 Set film thickness to 40 μ m (theoretical value)

　　Instructions for use

　　1. Surface pretreatment

　　The important point is to expose a clean steel or galvanized surface. Cold spray zinc must be directly applied to iron or galvanized surfaces, otherwise there will be no rust prevention effect.

　　If there is an old coating, it must be completely removed, otherwise there will be no rust prevention effect.

　　Steel: Remove dust and oil stains from the surface of steel, especially sea salt in coastal environments. For harsh environments or high anti-corrosion performance requirements, sandblasting is used for rust removal to achieve ISO (SIS) Sa 2 1/2 SSPC SP-10. For general atmospheric environments or power tools that cannot be sandblasted for rust removal, ISO (SIS) St3 SSPC SP-3 is used.

　　Galvanized parts: Dust, oil stains, sea salt, grinding paper, etc. on the surface of galvanized parts must be removed to remove white rust and achieve the ISO (SIS) St2 SSPC SP-2 grade. Rust areas that have already rusted should be removed using power tools to achieve the ISO (SIS) St3 grade? SSPC SP-3。

　　2. It contains a large amount of zinc powder and is prone to precipitation and layering during storage, so it must be thoroughly stirred after opening the lid. For products packaged in 10L, it is recommended to use an electric or pneumatic mixer. After mixing, please confirm that there is no sediment at the bottom of the tank. At the same time, attention should be paid to frequent stirring during the coating process to prevent zinc powder precipitation.

　　3. The coating methods are brush coating, roller coating, airless spraying, airless spraying, and spray agent type.

　　Brush coating/roller coating: Use a brush with soft bristles that can absorb a large amount of paint. When coating, be careful not to stretch the coating or leave brush marks to ensure uniform coating thickness. Do not dilute.

　　Air spraying: filter screen with 100 mesh, nozzle diameter of 1.5-2.0mm, air pressure: standard 0.29MPa

　　When diluting, use a specialized diluent set to less than 5% of the weight

　　Airless spraying: Filter mesh 50-60 mesh, using models GRACO greater than GGO317, Basic proportioned (recommended) 30:1 or more

　　Low gas atomization pressure of 10MPa basically does not require dilution.

　　When painting, please keep a vertical distance of about 30cm from the painting surface and paint at a speed of 10cm/second.

　　4. Topcoat coating

　　When using cold spray zinc coating as the primer for anti-corrosion coating system, it can be matched with various subsequent coatings. (Except for alcohol acid oil-based coatings)

　　·The recommended coating method for topcoat is spray coating or aerosol coating. Brushing or rolling coating can easily cause paint peeling on the surface of the coating.

　　·Due to the presence of a large amount of zinc powder, there are many gaps in the cold spray zinc coating, which can easily cause bubbles when directly applied. You can first apply about 50% diluted topcoat on the cold spray zinc coating to fill the gaps on the surface, and then apply the paint.

　　If used as a separate anti-corrosion coating system, topcoat is required.

　　Precautions

　　1. Place in a low-temperature and dry place with good ventilation, away from sources of fire.

　　2. Zinc powder is prone to react with moisture, so be careful to prevent the mixing of moisture during use and storage.

　　3. Please use a specialized diluent.

AfterSalesService :

• Cold spray zinc